Nut-lock.



i 0. SALISBURY.

NUT LOCK. APPLIoATIoN FILED JAN.22,'1910.

976,928. V Patented N0v 29,1910.

y Snom/woz 9 1 v USCG," Hal/@25mg awww,

OSCAR BALSBURY, 0F BASSANO, ALBERTA, CANADA'.

NUT-Loox. n

spammen rmi-m ment.

Patented Nev. 29, 191e.

Application ilcdvlanury 22, 1910. Serial No. 539,479.

To all whom 'it may concern: p

'Be it known that I, OSCAR SALisBURY, a subject of the King of England,residing at Bassano, in the Province of Alberta and Dominion oi Canada,have invented certain new and useful Improvements in Nut-Locks, of whichthe following is a specification, reference being had therein to theaccompanying drawing.

rlhis invention relates to nut locksand blocks, and the principal objectof the same is to provide means which will normally retain the boltandnut in locked relation but which may be readily removed `from itslocking position when it is desired or necessary to remove the nut fromthe bolt.

In the practical application of. the invention it is contemplatedemploying a longitudinally-slotted bolt, a counterbored nut pro-x videdwith notched Walls and camsupfaces, and a locking washer provided with.

lugs for engagement .with the slots ofthe bolt and arms' for engagementwith the.

notches of the nut, the same surfaces ofthe nut being adapted to serveas guides to move the said washer so that its locking armsI and lugs maybe automatically dropped into locking engagement with said slots andnotches.

yIn carrying out the objects of the invention generally stated above, itwill be understood, of course, that the essential features thereof arenecessarily susceptible of changes in detail and structuralarrangements,one preferred and practical embodiment of which is shown in the laccompanying drawing, wherein:

Figure 1 is a perspective view of the improved nut and bolt lock. Fig. 2is an end view. Fig.A 3 is a detail perspective view of the lockingWasher. Fi 4 is aside-elevation of a nut andbolt he d in locked relationand showing the manner of retaining the locking washer in engagementwith the nut Fig. 5 is a central sectional view of the nut forming apart of this invention.

Referringl to said drawing by numerals, 1 designates a bolt, thethreaded ortion 2 of whicliis provided with a plura ity of regularlyspaced external longitudinally arranged grooves 3. v

The nut lv is. provided with the usual threaded o ening 5 which issurrounded on one face o the nutby a c'ounterbored portion 6, theloutstanding side walls 7 of which are providedwith locking notches orrecespes are adapted for engagement with 8. The nut, as shown, maybe afour-sided nut, 'the outstanding walls/I ot the'nut being acontinuationof said sides land each wall g'be'ing` provided with :onenotch or recess, the

larrangementofthe notches bein-g such that gthey radiate from the centerVof vthe nut.

'I he outer' edge of thefour corners of the side walls 7 1s concavedanddownwardly in,4

-sitely-disposed inward y-projec'ting lugs 11 adapted to be engagedwiththe grooves 3 of lthe bolt, and also with oppositely disposedoutwardly projecting locking arms 12 which the notches 8 of the walls 7of the nut 4.

As will be observed by referencev to Fig. 4, the locking arms 12 may befastened Within ltlie'notches 8 of the walls 7 by upsetting the materialof thefwalls at the open end of said notches 8, as is indicated by thenumeral 13.

It will be seen from the foregoing that the f counterbored portion ofthe nut is provided with an inclosed seat 'for the washer so that thereis no danger of the washer being jarred to a nut and bolt releasingposition.

' In assembling the improved nut and bolt lock, the nut is screwed ontothe bolt in the,

To release the nut from the bolt, the upset material at the end of thenotches may be straightened out by an ordinary prying tool after whichthe washer may be remove from its locking position within thecounterbored .portion of the nut.

What I claim is:

1. A device of the character described comprising a slotted bolt, anutor said bolt,

said nut being counterbored to form a seat, the outer end of said nutprovided with concave ortions' Jforming guides and being provide withslots between said guide portions,

and alocking Washer adapted to lit Within said seat and provided withtongues to fit within the slots in said bolt and nut.

2. A device of the character described cornprising alongitudinally-slotted bolt, a nut,

on said bolt, the outer surface of said nut being counter-sunk to form aseat, the 'Walls of said seat provided with radial slots, a lockingWasher adapted to lit within said seat, said Washer being` formed of a.circular body-portion provided with outwardly and inwardly-projectinglugs, said lugs being in alinement with each other and adapted,respectively, for, engageinenty with the slots of the bolt and the slotsof the nut.

3. A device of the character described comprising alongitudinally-slotted bolt, a nut on said bolt, said nut-beingcounter-sunk t0 forni a seat, the outer 4Wall of said seat bein providedwith concave portions and radia slots between said concave portions, aWasher fittlng Within said seat, said washer being provided withoutwardly and inwardly-pro jeoting lugs to fit Within the slots in saidnutand bolt, the Walls of said radial slots adapted to be upset to locksaid washer in place.

n In testimony whereof I hereunto aix my signature in presence of twoWitnesses.

OSCAR SALISBURY. lVitnesses J. WEMYSS BENTON, E. S. HoTCHKiss.

